Module:Failure rate table
Documentation for this module may be created at Module:Failure rate table/doc
local table = require("Module:Calculated table")
local p = {}
-- translated from spl-cast.cc
local function tetrahedral_number(n)
return math.floor(n * (n+1) * (n+2) / 6)
end
-- translated from spl-cast.cc
local function true_fail_rate(raw_fail)
local outcomes = 101 * 101 * 100
local target = raw_fail * 3
if target <= 100 then
return tetrahedral_number(target) / outcomes
elseif target <= 200 then
return (tetrahedral_number(target) - 2 * tetrahedral_number(target - 101) - tetrahedral_number(target - 100)) / outcomes
end
return (outcomes - tetrahedral_number(300 - target)) / outcomes
end
local function success_func(base_fail, scale)
return function(env)
local skill = env.x
local fail = base_fail - scale*skill
if fail <= 0 then
return 0
end
return true_fail_rate(base_fail - scale*skill)
end
end
local function format(n)
return ("%.2f%%"):format(100*n)
end
function p.table(frame)
return table._table(frame.args[1], 27, {format = format}, "Failure rate(%)", success_func(frame.args[2], frame.args[3]))
end
return p
